A more thorough explanation:

Quantum meruit is a Latin term that means "as much as he has deserved." It is an equitable remedy that provides restitution for unjust enrichment. This means that if someone has received a benefit or service that they did not pay for, they may be required to compensate the person who provided the service.

For example, if a contractor performs work on a house but the homeowner refuses to pay, the contractor may file a claim in quantum meruit to recover the reasonable value of the services rendered. The court will determine what amount is fair and just for the work that was done.

Another example is if a person hires a lawyer to represent them in a case, but the lawyer is not able to complete the work. The lawyer may still be entitled to compensation for the work that was done up to that point, based on the principle of quantum meruit.

Overall, quantum meruit is a way to ensure that people are compensated fairly for the work they have done, even if there was no formal contract in place.